Well, it could be about Naruto having to deal with the strict and fiery nature of Akainu as his father. Maybe Naruto has to adapt to a more military - style upbringing while still holding onto his own ninja values.
The plot might involve Naruto struggling to fit in with the Akainu - influenced family or group. He could be constantly at odds with Akainu's ideas, yet slowly learning some useful skills from him. For example, Akainu's strong sense of justice, though different from Naruto's ninja world's concept, might shape Naruto in a new way. And there could be conflicts with Naruto's friends who don't trust Akainu or his family. Also, Naruto might have to face enemies who target him because of his relation to Akainu.
One possible plot could be that Akainu attacks the Straw Hat's new island, endangering Luffy's friends. Luffy, filled with rage, challenges Akainu. After an intense battle, Luffy discovers a new form of his Gear ability that allows him to withstand Akainu's magma and finally defeat him.
Naruto's character would likely become more complex. He might develop a harsher edge due to Akainu's influence, but still retain his core kindness.
One common theme is the clash of ideologies. Akainu has a very strict and uncompromising view of justice in his original story, while Naruto has a more forgiving and rehabilitative view. So when they interact in fanfiction, this clash often forms a central theme.
One possible plot could be that Naruto, being Elsa's son, discovers his ice powers at a young age in the Hidden Leaf Village. He might struggle to control them at first, just like Elsa did. His friends in the village could be both curious and a bit scared of his powers. Naruto would then have to learn to balance his ninja training with understanding and mastering his ice abilities, all while trying to keep his identity as Elsa's son a secret from potential enemies who might want to use his unique powers for their own gain.
The fanfiction could also focus on Naruto's relationships. His friends might be initially shocked or confused about his connection to Arachne. But as the story progresses, they come to accept him for who he is. And perhaps there are new characters introduced who are related to Arachne's world, and Naruto has to navigate his relationships with them while still being part of the ninja community.
Well, it could be about Naruto having Shiva's powers. Maybe he discovers his connection to Shiva and has to use these new powers to fight some powerful enemies in the Naruto universe.
Well, it could be about Naruto having the speed abilities like The Flash. Maybe he uses those super - fast powers to outwit his enemies in battles. For example, he could quickly dodge attacks and then counter - attack before the enemy even realizes it.
Well, it could be about Naruto having some hidden connection to Scorpion. Maybe Scorpion had a secret relationship and Naruto is the result. Naruto might inherit some of Scorpion's skills or traits, like his puppet - making abilities in a really unique way. He could struggle with this new identity and how it fits into his ninja world, especially with his existing bonds in Konoha.
The plot might involve Naruto having to deal with the stigma of being the'son' of Sasori. He could struggle to find his place in the ninja world while also having to face the enemies that Sasori made in his past. And he might use the skills he learned from Sasori in unexpected ways to protect his friends and the village.
The plot might revolve around Naruto being ostracized because of his relation to the 'son of scar' title. He then has to prove himself not only as a ninja but also to overcome the stigma associated with this identity. This could lead to many adventures where he battles against those who misjudge him and in the process, uncovers the truth behind the scar and his heritage.